Description
Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3 allows SSRF via the ProxyServlet component.
Scoring
- CVSS: 7.5 (HIGH, 3.1)
- EPSS exploitation probability: Not yet available
- EPSS percentile: Not yet available
CISA KEV status
- Added to KEV: 2025-07-07
- Remediation due date: 2025-07-28
- Known ransomware campaign use: Unknown
Weakness types (CWE)
- CWE-918
- CWE-918
References
- http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
- http://packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.html
- http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
- https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.html
- https://blog.zimbra.com/2019/03/9826/
- https://bugzilla.zimbra.com/show_bug.cgi?id=109127
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://www.exploit-db.com/exploits/46693/
- http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
More from Synacor
- CVE-2026-73570 — Zimbra Collaboration Suite (ZCS)
- CVE-2025-48700 — Zimbra Collaboration Suite (ZCS)
- CVE-2025-66376 — Zimbra Collaboration Suite (ZCS)
- CVE-2020-7796 — Zimbra Collaboration Suite
- CVE-2025-68645 — Zimbra Collaboration Suite (ZCS)
More HIGH-severity vulnerabilities · All exploited vulnerabilities